From 3808f903625f42f58aa95e43e3caca3efaa4d118 Mon Sep 17 00:00:00 2001 From: Sanjit Bhat Date: Mon, 30 Oct 2023 14:39:28 -0500 Subject: lock: release lab --- user/statistics.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 user/statistics.c (limited to 'user/statistics.c') diff --git a/user/statistics.c b/user/statistics.c new file mode 100644 index 0000000..e22681a --- /dev/null +++ b/user/statistics.c @@ -0,0 +1,24 @@ +#include "kernel/types.h" +#include "kernel/stat.h" +#include "kernel/fcntl.h" +#include "user/user.h" + +int +statistics(void *buf, int sz) +{ + int fd, i, n; + + fd = open("statistics", O_RDONLY); + if(fd < 0) { + fprintf(2, "stats: open failed\n"); + exit(1); + } + for (i = 0; i < sz; ) { + if ((n = read(fd, buf+i, sz-i)) < 0) { + break; + } + i += n; + } + close(fd); + return i; +} -- cgit v1.2.3